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The Worst Viruses in History

Hendra Virus

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Even medical reading fans might not recognize this name, but don’t let that fool you. The Hendra virus is a serious killer, with a shocking 57 percent mortality rate associated with outbreaks.

The disease starts with flu-like issues, then quickly devolves into encephalitis. Lucky for us, there have only been a handful of cases since the virus was first discovered.


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